Category Tanks, Cisterns & IBC Totes

Size a cold-water-tank ball valve to the outlet and connected pipe while checking required flow, pressure, thread standard, material, full-port design, and access.

A common IBC outlet is nominal two-inch S60x6 male buttress thread, but alternatives exist. Measure outside diameter and pitch before choosing caps or adapters.

Rainwater tank size depends on roof catchment, local rainfall, collection efficiency, water demand, dry-season length, footprint, budget, and reserve goals.

Lifting water 20 feet requires about 8.7 psi of head before pipe losses and delivery pressure. Size the pump from total head and required flow, not horsepower alone.

Size a sprinkler pump from zone flow and operating pressure plus lift and pipe losses. Check the pump curve at total head rather than choosing by horsepower alone.

Size a water-tank pump for required flow and pressure after elevation and pipe losses. Include duty cycle, power, controls, and dry-run protection.

A 275-gallon IBC tote commonly uses a DN50 two-inch discharge valve, although outlet thread and flange styles vary. Match the actual valve before replacement.

Two people need a tank sized from measured daily use, source or roof yield, refill interval, dry-period goal, usable reserve, available space, and budget.

Estimate water-tank size from daily demand, storage days, catchment area, rainfall, collection efficiency, refill pattern, usable volume, and reserve allowance.

IBC tote temperature limits depend on the HDPE bottle, valve, gasket, contents, pressure, and manufacturer rating. Heat and freezing require different safeguards.